RECON: TNO occultation with 00CG105

Event between 00CG105 and star GA0880:03814208 with event index number of 1031308

Geocentric closest approach at 2021/01/07 15:31:30 UTC

J2000 position of star is 10:13:34.3 -00:28:23
Equinox of date position of star is 10:14:38.6 -00:34:39
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=23.3

TNO is 47.2 AU from the Sun and 46.6 AU from the Earth.
The TNO is moving 17.4 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 97 seconds.
The 1-sigma cross-track error in the shadow position is 1689 km.

The TNO has an absolute magnitude Hv=6.5
Diameter=304.8 km assuming a 5% albedo -- 17.5 sec chord
Diameter=124.4 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 00CG105, (2021/01/07 15:31UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:29.4 +11:51:49  1.3 12.51  64
15Alp Sex      10:09:00.8 -00:28:31  4.4  1.41  61
PPM 178111     10:13:19.1 -01:21:55  8.4  0.85  60
PPM 178120     10:15:16.3 -00:39:27  9.8  0.18  60
PPM 178112     10:14:07.0 -00:39:14 10.2  0.15  60
00CG105        10:14:38.8 -00:34:40 14.0        60
Positions are for equinox of date

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 00CG105, (2021/01/07 15:31UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 12.51  64
15Alp Sex      10:07:56.2 -00:22:19  4.4  1.41  61
PPM 178111     10:12:14.7 -01:15:39  8.4  0.85  60
PPM 178120     10:14:11.8 -00:33:09  9.8  0.18  60
PPM 178112     10:13:02.5 -00:32:57 10.2  0.15  60
00CG105        10:13:34.3 -00:28:23 14.0        60
Positions are for J2000

Event circumstances last updated at 2020/12/12 21:04:55 UT

Marc W. Buie, Southwest Research Institute

RECON